Referee's report by William Thomson, Lord Kelvin, on a paper 'On the relative speed of the electric wave through submarine cables of different lengths, and a unit of speed for comparing electric cables by bisecting the electric wave' by Cromwell Fleetwood Varley Recommended for publication in the 'Philosophical Transactions of the Royal Society'. Considers the method 'exceedingly good' and hopes the author will continue his investigations. Refers to work by Hippolyte Fizeau and Gunelli [?]. The author is conducting more experiments, suggests that these results could be appended to the current paper, but that publication of the curent paper should not be delayed. Subject: Physics and Chemistry [Published in the 'Proceedings of the Royal Society of London', 1863] 16 June 1863